Are exit polls data better than other polling data?
Exit polls, properly conducted, can remove most sources of polling error. Unlike telephone polls, an exit poll will not be skewed by the fact that some groups of people tend not to be home in the evening or don’t own a landline telephone. Exit polls are not confounded by speculation about who will actually show up to vote, or by voters who decide to change their mind in the final moments. Rather, they identify the entire voting population in representative precincts and survey respondents immediately upon leaving the polling place about their votes. Moreover, exit polls can obtain very large samples in a cost-effective manner, thus providing even greater degrees of reliability.
